canonical.cpp revision 8e8fb3be5bd78f0564444eca02b404566a5f3b5d 
1// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
2// expected-no-diagnostics
3
4// PR10087: Make sure that we don't conflate exception specifications
5// from different functions in the canonical type system.
6namespace std
7{
8
9template <class _Tp> _Tp&& declval() noexcept;
10
11template <class _Tp, class... _Args>
12struct __is_nothrow_constructible
13{
14  static const bool value = noexcept(_Tp(declval<_Args>()...));
15};
16
17template<class, class _Traits, class _Allocator>
18class basic_string
19{
20public:
21  typedef typename _Traits::char_type value_type;
22  typedef _Allocator allocator_type;
23
24  basic_string()
25      noexcept(__is_nothrow_constructible<allocator_type>::value);
26};
27
28template <class, class, class _Compare>
29struct __map_value_compare
30{
31public:
32  __map_value_compare()
33      noexcept(__is_nothrow_constructible<_Compare>::value);
34};
35
36struct less
37{
38};
39
40struct map
41{
42  typedef __map_value_compare<int, short, less> __vc;
43  __vc vc_;
44};
45
46
47template<class T, class _Traits, class _Allocator>
48basic_string<T, _Traits, _Allocator>::basic_string() noexcept(__is_nothrow_constructible<allocator_type>::value) {}
49
50template <class T, class Value, class _Compare>
51__map_value_compare<T, Value, _Compare>::__map_value_compare()
52  noexcept(__is_nothrow_constructible<_Compare>::value) {}
53
54}  // std
55